I've said a few different ships in various threads but I'll toss out a few: Arasoldavekat is PEAK. All axises of that pairing are amazing but I especially am fond of the rarer aspects of it, which are Arakat & Aradave.

Fefvris is also a really big rarepair of mine. Lionpyh did it SO WELL in Watch The Roots I will never be over Vriska saying to Sollux, "Tell her he has paid". And then in general their whole dynamic is so ripe with possibility considering the way they are both connected to necessary murder for survival.